Nine Finger 02 Z28

iTrader: (11)

Finaly out of the 12's.But not by much... Well I went out to Fontana.Got there at around 6:45 and I still got in 7 runs.Well here they are
1st run
2.004 60ft
5.264 330ft
7.918 1/8 et
93.53 1/8 mph
10.181 1000ft
12.107 1/4 et
116.72 1/4 mph

2nd run
2.050 60ft
5.317 330ft
7.983 1/8 et
93.37 1/8 mph
10.255 1000ft
12.189 1/4 et
116.26 1/4 mph

3rd run
1.898 60ft
5.195 330ft
7.889 1/8 et
92.57 1/8 mph
10.171 1000ft
12.109 1/4 et
116.06 1/4 mph

4th run
1.977 60ft
5.271 330ft
7.954 1/8 et
92.85 1/8 mph
10.230 1000ft
12.162 1/4 et
116.40 1/4 mph

5th run
2.000 60ft
5.270 330ft
7.938 1/8 et
93.32 1/8 mph
10.217 1000ft
12.154 1/4 et
116.28 1/4 mph

6th run
1.927 60ft
5.185 330ft
7.851 1/8 et
93.45 1/8 mph
10.123 1000ft
12.055 1/4 et
116.52 1/4 mph

7th run Save the best for last
1.932 60ft
5.160 330ft
7.796 1/8 et
94.36 1/8 mph
10.044 1000ft
11.956 1/4 et
117.57 1/4 mph

Well I am very happy with my times considering my 60ft times sucked major A$$ .So now the next thing is to figure out the 60ft time problem.I know that part of my problem is that I am running 28' tall tires with 3.42 gears.Other than that I have myself a decent Bracket Race Car...

Larry

iTrader: (4)

Good running! I'm confused with your signature though. You say you have a 2002 Z28 A3. Do you mean A4 auto tranny? "405.7 RWHP with unlocked converter" so you apparently have an automatic but then you go on to say "M6 on Good Year....." Do you have a standard or automatic tranny?

If you are only running 1.9 60' times then a looser converter would get you well into the 11s with that high mph.

99taws6

iTrader: (2)

I think he had a M6 car, then he switched to a TH350/TH400 3 spd auto tranny.. The times in his sig are his old M6 times... The ones listed are with the new A3 tranny

Nine Finger 02 Z28

iTrader: (11)

Yah it is now a TH350 but in the begining I was breaking Flexplates a total of 3 so I had the M6 in and out a few times.But now the M6 has been sold for a while and I am trying to sort out my problems with the A3.On the Trans. Brake it only stalls up to 3k so I know the convertor is a bit tight.I had a 4500 stall and I was getting 1.71 60ft times but I would lose 3mph in the 1/8.So I guess now I am going to go with a 3600-3800 stall maybe.

Larry

iTrader: (4)

Now I understand!

What I don't understand is why you don't have a better 60' if you have a 3.42 gear even with 28" tall tires. You have more hp than I do although my car weighs slightly less than yours. What rpm does your dyno show peak torque, converter locked? You want your converter to stall 500 rpm below peak torque.

I ran a 1.54 60' but only 115.74 mph. Get everything right and you should 60' a little better than my car. I have a PI 3600 stall with a 3.23 gear. I have a whole lot less cam than you. 218/218, .528 lift.

I think the problem is in your converter stall rpm or you have your cam timed wrong resulting in too high peak torque.

xp3nd4bl3

Congrats on the new best Jason.

Nine Finger 02 Z28

iTrader: (11)

Thanks...What is your plans with your ride now...Can't wait to see you at the track.

Nine Finger 02 Z28

iTrader: (11)

I don't have a lock up converter.I know I am a bit Stumped myself.It comes out of the burn out box like a monster and then leave the line Sh*t.Also during the burn I was told that at times both tires are not spinning.

Larry

iTrader: (4)

What does the cam manufacturer specify for peak torque? Where does peak hp occur as compared to the manufacturer specs? That would give us an estimate on peak torque in your set up.

You got to know where peak torque occurs with converter locked or you are guessing. In your case without a locking converter we might be able to guess close if you know the advance ground into the cam, where you have it installed along with all the other specs. Do you have the cam card?